Table for box-nailing machines



Eepit. i8 1923.

. G. D. PARKER TABLE FOR BOX NAILING MACHINES Original Filed Jan. 5,1922 3 Sheets-Sheet 1 Sept. 18,1923, L46892 I G. D. PARKER TABLE FOR BOXNAILING MACHINES Original Filed Jan. 5 1922 3 Sheets-Sheet 2 Sept. 181923.

G. D. PARKER TABLE FOR BOX NAILING MACHINES Original Filed' Jan.

5 1922 3 SheetsSheet 3 dtlaivzeyg,

Patent Sept. 118, 1923.

GEORGE D. PARKER, OF RIVERSIDE, CALIFORNIA.

TABLE FOR BOX-NAILING MACHINES.

Original application filed January 5, 1922, Serial No. 527,065. Dividedand this application filed July 25, 1922. Serial No. 577,378.

To all whom it may concern.

Be it known that I, GEORGE D. PARKER,

. a citizen of the United States, residing at Riverside, in the countyof Riverside and State of California, have invented certain new anduseful Improvements in Tables for Box-Nailing Machines, of which thefollowing is a specification.

The present invention is a division of my application for Letters-Patentof the United States, Serial No. 527,065, filed January 5th, 1922, andrelates to machinery .for the nailing of the sides and bottom pieces orsh0ok material to. the end pieces of a box for the production of acomplete box withthe exception of the cover pieces, for use in theshipment of products generally; the invention relating more particularlyto the provision of means whereby lateral and vertical adjustment may begiven to the nailing bases of the apparatus so as to adapt the same forthe manufacture of difierent sizes of boxes.

In the operation of box nailing machinery as at present constructed, theaction of the nailing mechaninn is such that the nails employed foruniting the sides and bottom pieces to the end pieces of the box areeach driven a 'iven distance into the surface of said sides and bottompieces irrespective as to whether the pieces are formed of oversize orof undersize materialtby the expression oversize or undersize is 'to beunderstood the thickness of the pieces), with the result that where thematerial is undersize the nails are driven to such a depth within thepieces as to give little or no resistance to the breaking ofi orstripping of the said pieces after the formation of the box, and whereoversize material constitutes the side and bottom pieces they are driveninto the wood to a distance considerably. beyond that required to unitethe said pieces to the end pieces of the box.

The object of the resent invention is the production of a nai 'ngapparatus wherein the nailing bases are so arranged as to permit oflateral and vertical adjustment being imparted thereto with respect tothe nailing mechanism with which they co-operate to vary or adjust theosition thereof to ac c'ommodate' the mac 'ine or apparatus for thenailing of boxes of varying sizes and within certain limits, as, forinstance, any

boxes that come within the following dimensions can be made on a singleapparatus,

viz :-boxes having a maximum length of should be had to the accompanyingsheets of drawings, wherein Fig. 1 is a front elevation of an ordinarybox nailing machine with my improvements applied thereto. 7

Fig. 2 is a side elevation illustrating one series of adjustable nailingbases with means for carrying the same.

Fig. 3 is a front sectional elevation, taken on the line 3-3 Fig. 4 ofthe drawings, and viewed in the direction of the arrow.

Fig. 4: is a horizontal sectional plan view taken on the line 4-4 Fig. 2of the drawings, and viewed in the direction of the arrow.

Fig. 5 is a broken detail part sectional view, illustrating one of theyieldably mounted supporting shafts for the nailing bases.

Figs. 6, 7 and 8 are side views in elevation illustrating respectivelythe nail driving mechanism acting on standard sized, oversized andundersized .material.

Figs. 9, 10 and 11 are detail sectional views disclosing the drivenposition of the nails relative to the side pieces of standard sized,oversized and undersized material,

In the drawings, the numerals 1, 2 and 3 ifidicate one series of thevertically and laterally adjustable nailing bases, and 4, 5 and 6 theopposing or companion series ofvertically and laterally adjusted nailingbases. lhese nailing bases are emh vertically slotted as disclosed bythe reference numeral 7, Fig. 2 of the drawings, and the said nailingbases are held in vertical adjusted position relative to each other bymeans of the adjusting bolts 8, which serve to clamp the members of eachseries one to the other and hold the same in the desired verticalposition; Each series ofadjustable nailing bases are thus united as anintegral unit when adjusted relative to each other. Each unit of nailingbases is mounted upon a trunnion 9, which trunnions are mounted inbearings slidable laterally on an I-beam track ll and the said bearings10 are setscrewed to laterally movable shafts 12. Therevare two suchshafts provided, each carrying at its inner end a cam roller 13 whichcooperates with an actuating cam 14. The said cam 14 is secured to theupper end of a vertical shaft 15, to the lower end of which is secured abevelled gear 16 which meshes with a pinion 17 secured to the driveshaft 18 of the apparatus-Fig. 1 of the drawings. This shaft at itsouter ends carry the cranks 19 to which are connected the lower end ofthe pitmans 20, the upper ends of which are extended through the hangerframes 21 secured to and depending from the outer ends of the verticallyreciprocatingnail driver head 22. The connect ng rods are acted upon bythe compression springs 23 which surround their upper end portionsextended within the hangers 21 and said springs are held in position bymeans of the head 24 of the connecting rods and the lower face of thehanger 21, so that the said connecting rods 20 are yieldingly heldrelatively to the hangers 21 and act against the tension of the springs23.

Returning to the laterally yielding shafts 12, it will be noted that theouter end of each fits within a bearing 25-Figs. 1 and 5 of thedrawings, and that each of said shafts is held normally inwardly pressedbythe tension of a spring 26 fitted within a bearing box 25; the tensionof the spr1ng 26 holding the cam roller 13 carried at the inner end ofeach shaft 12 firmly against the surface of the cam 14. This cam in thepresent case is formed with three steps, in dicated by the numerals26'-Fig. 4 of the drawings, so that during each revolution of the saidcam, the shafts 12 will be intermittently moved laterally three timesand during the rest period of each movement of said shafts the camrollers 13 resting on one of the steps 26' of the said cam 14, theperiod of rest of each shaft being sufficient to permit the nailingoperation of the machine to be completed relative to one pair ofpositioned nailing bases. of giving or imparting three lateral movements to the shafts 12 is to shift the position of the nailing bases 1,2 and 3 and 4t, 5 and 6 to intermittently place their holding heads 1automatically and independently in line with the drivers or nail punchesof the apparatus.

The difference in height of the top surfaces or heads 1 between therespective pairs of nailing bases 2-5 and 3-4 allows for the thicknessof one side shook or piece, while the adjusted difference in heightbetween the heads of the nailing bases 1-6 and the heads of the nailingbases 2-5 and 3 4 allows for the difference between the width and heightof the box to be nailed,

The purpose the bearing boxes 10 being mounted for lateral adjustmentrelative to the shafts 12 provide for an adjustment to vary the distancebetween opposite sets of nailing bases to accommodate a wide variationin the length of the boxes to be made, the vertical adjustment providedfor each set of nailing boxes providing for a wide range of widthandheight of boxes to be made.

In the present case, the design of the machine is such that the ends andside pieces are fed into the machine by hand and by hand the end piecesare turned over after one side has been nailed thereto for the nailingof the other side pieces, and, equally so, turned for the nailing of'thebottom pieces. However, it is immaterial so far as concerns'the presentinvention whether the partially formed box during the course of thenailing operation be turned by hand or automatically, equally so whetherthe material for the box be automatically fed into the machine ordelivered thereto by hand.

i The operating mechanism of the apparatus is carried by any suitablyconstructed frame structure 27, common to box making machinery and whichsupports the oscillatory nail feed pan 2S and the nail guide tubes 29,which receive the nails therefrom and guide the same to the nail chucks30 carried by and downwardly projected from the usual nail chuck frame31. From the nail;

work through the nail chucks 30, the nail punches being adapted toproject below or beyond the nail chucks to a distance of approximatelyone-sixteenth of an inch when the nail driver 22 has reached itslowermost position and said punches serve to force or drive the nails 33into the box material so as to leave the head thereof on the completionof the nailing operation substantially fiush with the upper surface ofthe sides and bottom pieces--Figs. 6 to 11 of the drawings.

In Figs. 6 and 9 of the drawings the nails are illustrated as driventhrough the side of bottom pieces of a box formed from material ofstandard thickness, while in Figs. 7 and 10 illustration is made withthe nails driven into material oversized, and the representation inFigs. 8 and 11 is of the nails driven into material undersized, but ineach of said illustrations it will be noted that the head of the nailsafter the driving operation is substantially flush with the uppersurface of the side or bottom pieces 34 being nailed onto the end orhead piece 35 of the box.

To accomplish this uniform driving of the nails leaving the same afterbeing driven home with the heads substantially flush with the uppersurface of the side or bottom'pieces,

it is required that the downward movement of the nail driver 22 bestopped or brought to rest after the nails have been driven a. givendistance to leave the head flush with driver 22 depend the nail punches32 which said surface. This arresting movement of the nail driver 22 isaccomplished through the medium of the compression springs 23.

The nails are driven into the material by the downward movement of thenail driver 22 until the heads thereof have been sunk substantiallyflush with the top surface of the material through which they aredriven, at which time the nail chuck bears onto the upper surface of thesaid pieces and the nail driver 22 at such time will have reached thelimit of its downward movement. In case the side or the bottom piecesare formed of material oversized as to thickness, there will be lessdownward movement permitted the nail driver 22 over that permitted wherethe material is of standard size, and in such case after the nail chuckshave been brought to bear onto the upper surface of the material it isnecessary that the action or downward movement of the nail driver 22becontinued until the nail punches have driven the rails to such a depthinto the material as to bring the ends or heads thereof flush with theupper surface of the side or bottom pieces, which additional movement ISpermitted by the springs :23 allowing the pitrnan rods 21 continuingtheir downward movement and the compression of the springs serving bythe pressure placed onto the hangers 21 to continue the downwardmovement of the nail driver 22 until the nails have been firmly drivenhome, as disclosed by Fig. 7 of the drawings.

'here the material is undersized, the nail driver 22 continues itsdownward movement after the nail chucks 30 have been brought to bearonto the upper surface of the material through the compression of thesprings 23, but the compression of the springs in such case is slightlyless than that imparted thereto When acting on oversized material, asdisclosed bv Fig. 8 of the drawings. It will; thus be noted that in eachcase the driving of the nails ceases on the heads thereof being sunkinto the material until the tops thereof lie substantially flush withthe upper surface of the side or bottom pieces.

In Figs. 5), 10 and 11 the normal nailing line is disclosed by thereference numeral A, the completion of the nailing operations (he closedthereby indicating that the nails have been sunk into the materialsubstantially a uniform depth and flush relative to the upper surfacethereof and this irrespective as to whether the material constitutingthe side and end pieces be from standard, oversized or undersizedmaterial, with the result that there is always a proper nailing of thepieces to the heads or ends of the box without mutilation or damage tothe shook, and with the assurance that the said sides and bottoms areproperly secured and held to the ends or head pieces.

By mounting the vertically adjustable nail bases for slight lateralswinging movement through the medium of the trunnions 9,

' the same will readily adapt themselves to boxes varying slightly inwidth, due to the nonuniformity of the ends or head, pieces as tothickness.

In the illustration of the apparatus for the carrying out of theinvention, the same is disclosed as operating on a box 4 inches indepth,in which case the adjustable nailing bases 1 and 6 have been adjustedvertically relatively to the companion nailing bases as to position theheads 1 thereof a proper distance from the chuck frame 31 to permit ofthe introduction of the heads or end pieces 35, and the placing of thesides or bottom pieces 33 thereon for nailing. After the bottom ieces 33have been nailed to the heads or en s 35, the partially formed box isthen turned, and as the width thereof is censiderably greater than thedepth, the heads or ends of such boxes will rest on the heads 1 of thenailing bases 2-5, the action ofthe cam 14 at such time being to shiftthe position of the nailing bases laterally to position the heads 1 ofthe nailin bases 2-5 in line with the nail punches.

6n the completion of the second nailing operation the box is againturned for the nailing of the opposing side pieces thereto, but as theheight thereof is slightly greater, due to the thickness of the sidepieces just nailed, it is required that the partially formed box hesupported by heads 1 positioned ina slightly lowered plane from theheads 1 of the nailing bases 25. It is for this reason that the nailingbases 3-4 are so positioned as to place the heads 1 thereof in a planelower than the heads 1 of the nailing bases 2-5, Fig. 1 of the drawings.In the third nailing operation the partially formed box is positioned torest on the heads 1 of the nailing bases 3-4, which places the upperedges of the heads or ends in the same position relative to the nailingmechanism as when supported by the heads 1 of the nailing bases 25.

The nail chucks 30 are carried by the chuck brackets 30 which areslidably adjustable relative to the nail chuck frame 31, so as to permitthe distance between eah set of nail driver chucks to be increased ordecreased in accordance with lateral ad- 'justments given to the sets ofnail bases to adapt the same for operation on boxes of different widths.

Under no normal working condition of the apparatus are the nails driveninto the material to be united other than a predetermined distance, forany movement of the'pitmans 20 which would cause a downward movement ofthe nail driver 22 equal to the fullmovement of the said pitmans ifconnected rigidly thereto, is overcome or avoided by the introduction ofthe compression and cushioning springs 23 interposed between the pitmans20 and the nail driver 22.

It is apparent that the nail bases may be adjusted vertically to adaptthe same for While the preferred embodiment for the carrying out of theinvention has been illustrated and described, I do not wish to beunderstood as limiting or restricting the invention to said details ofconstruction, being well aware that changes may be made in the workingparts of the apparatus without causing or creating a departure from thenature and spirit of the invention, and wish to be understood asclaiming the invention as broadly as the state of the art will warrant.

Having thus described the invention, what is claimed and desired to beprotected by Letters Patent of the United States is 1. In a box nailingmachine, the combination with-the nail delivery and the nail drivingmechanisms thereof, of a plurality of groups of nailing bases held inspaced relation, and means permitting independent vertical adjustment tothe nailing bases of each group. v

2. In a box nailing machine, the combination with the nail delivery andthe nail driving mechanisms thereof, of a plurality of groups of nailingbases held in spaced relation, the. members of each group beingindependently adjustable relative to each other to adjust the positionthereof with respect to the nail driving mechanism to adapt the niachinefor the nailing of boxes of varying sizes.

3. In a box nailing machine, the combination with the nail delivery andthe nail driving mechanisms thereof, of spaced groups of nailing basesmounted for lateral swinging movement, each group comprising paralleldisposed independently vertical agjustable bases, and means for holdingt nailing bases in vertical adjusted position.

d. In a bot: nailing machine, the combiaeasea nation with the naildelivery and the nail driving mechanisms thereof, of spaced groups ofnailing bases mounted for lateral swinging movement, the bases of eachgroup being independently vertically adjustable relative to one another,means for holding the nailing bases in adjusted position, and means .forautomatically adjusting the posi tion of the groups of nailing basesduring the operation of the machine.

5. In a box nailing machine, the combination with the nail delivery andthe nail drivin mechanisms thereof, of spaced groups of nailing bases,each group comprising a series of independently vertically adjustablenailing bases held in parallelism, and means for automatically shiftingthe position of each group of nailing bases laterally during theoperation of the machine.

6. In a box nailing machine, the combination with the nailing mechanismthereof, of spaced groups of nailing bases, each group comprising aseries of vertically disposed independently adjustable bases held inparallelism, and means for imparting lateral adjustment to each of saidgroups.

7. In a box nailing machine, the combination with spaced groups ofnailing bases, each of which comprises a series of independentlyvertically adjustable bases arranged-in parallelism, and means holdingthe bases in adjusted position relative to one another.

8. In. a box nailing machine, the combination with spaced groups ofnailing bases,

each of which comprises aseries of independntly vertically adjustablebases held in parallelism, a laterally adjustable bearing for each ofsaid groups, a spring held horizontally disposed shaft for each bearing,and means interposed between said shafts for actuating the same to shiftthe position of the groups laterally during the operation of themachine.

9. In a box nailing machine, the combination with the nail delivery andnail driving mechanism thereof, of a plurality of groups of nailingbases held in spaced reiation, the

members of each group being disposed in different horizontal planes withrespect to each other, and means for automatically varying the lateralposition of said nailing bases with respect to each other during theoperative movements of the machine in the formation of a box.

In testimony whereof I have signed my name tov this specification.

' GEURGE D. PARKER.

